2x(-4)=-8,你能用英语把这个等式(equation)读出来吗?被难倒了吧!
如果还有波形符号、立方根、函数表达等,你是不是心慌了呢?
别着急!
下面给你整理歪果仁如何说的各种数学符号和标点符号的
英文表达,看完后你马上就会说了!

Mathematical symbols 数学符号

01 +: plus 加号;正号
 
“1+1”读作:one plus one
 
02 -: minus; negative 减号;负号
 
“2-1”读作:two minus one
 
“-3”读作:minus three或negative three
 
“2-(-3)”读作:two minus negative three
 
03 ±: plus-minus sign 正负号
 
“±1” 读作:plus or minus one
 
04 ×: multiplied by ; times 乘号
 
“2×3” 读作:two multiplied by three 或 two times three
 
05 ÷: divided by 除号
 
“4÷2”读作:four divided by two
 
06 =: equals; is equal to 等于号
 
“1+1=2”读作:One plus one equals two. 或 One plus one is equal to two.
 
07 ≠: is not equal to 不等于号
 
“a≠b”读作:a is not equal to b
 
08 ≌: congruent to 全等(两个图形形状相同、大小相等)
 
“△ABC≌△DEF”读作:Triangle ABC is congruent to Triangle DEF.
 
09 ≈: approximately equal to 约等于号
 
“3×3≈10” 读作:Three multiplied by three is approximately equal to ten.
 
10 <: is less than 小于号
 
“1<2”读作 One is less than two.
 
11 >: is greater than 大于号
 
“2>1”读作:Two is greater than one.
 
12 ≮: is not less than 不小于号
 
“3≮2”读作:Three is not less than two.
 
13 ≯: is not greater than 不大于号
 
“2≯4” 读作:Two is not greater than four.
 
14 ≤: is less than or equal to 小于或等于号
 
“2≤3”读作:Two is less than or equal to three.
 
15 ≥: is greater than or equal to 大于或等于号
 
“5≥4”读作:Five is greater than or equal to four.
 
16 %: percent 百分之……
 
“10%”读作:ten percent
 
17 ‰ : per mill ; per thousand 千分之……
 
“10‰”读作:ten per thousand

18 ∞: infinity 无限大号
 
“-∞” 读作:negative infinity
 
19 ∝: varies as 与...成比例
 
“X∝Y”读作:X varies as Y
 
20 √ ̄: square root 平方根
 
“√ ̄16=4”读作:The square root of sixteen is four.
 
21 3√ ̄: cube root 立方根
 
“3√ ̄27=3”读作:The cube root of 27 is 3.
 
22 ∵: since; because 因为
 
“∵1+1=2”读作:because one plus one equals two
 
23 ∴: hence; therefore 所以
 
“∴1<2”读作:hence one is less than two
 
24 ∠: angle 角
 
“∠A”读作:angle A
 
“∠A +∠B+∠C=180°” 读作:The measure of angle A plus angle B plus angle C equals 180 degrees.
 
25 ⌒: semicircle 半圆
 
“⌒AB”读作:semicircle AB
 
26 ⊙: circle 圆
 
“⊙A”读作:circle A
 
27 ○: circumference 圆周
 
“○=π×d”读作:Pi multiplied by d equals circumference.
 
28 π: pi constant 圆周率
 
“π×d”读作:pi multiplied by d
 
29 △: triangle 三角形
 
“△ABC”读作:triangle ABC
 
What is the area of triangle ABC? 求三角形ABC的面积。

30 ⊥: perpendicular to 垂直于
 
“A⊥B”读作:A is perpendicular to B.
 
31 //: parallel to 平行于
 
Line AB is parallel to line CD.
 
32 ∪: union of 并,合集
 
“A∪B”读作:the union of A and B
 
33 ∩: intersection of 交,通集
 
“A∩B”读作:The intersection of A and B
 
34 ∫: the integral of ……的积分
 
“∫x”读作:the integral of x
 
35 ∑: summation of 总和
 
“∑x”读作:the summation of x
 
36 equation 方程式、等式
 
“y = kx” 读作:Y varies as x.
 
K is "the constant of variation. y与x成正比(y是x的正比函数),k是常数。
 
 
“y = k/x”读作:Y varies inversely as x. y与x成反比例(y是x的反比例函数)。
 
Punctuation marks 标点符号
 
° degree 度

 minute 分
 
″ second 秒
 
 Celsius degree 摄氏度
 
 Fahrenheit degree 华氏度
 
at sign
 
{ } curly brackets 波形括号
 
[ ] square brackets 方括号
 
( )parentheses ; brackets; round brackets 括号
 
(  open parenthesis 左括号
 
 ) close parenthesis 右括号
 
. point/dot 点
 
| vertical bar; vertical virgule 竖线
 
& ampersand; and; reference; ref 和,引用
 
* asterisk, multiply, star, pointer 星号,乘号,星,指针
 
slash; divide; oblique; stroke; solidus 斜线,斜杠,除号
 
// slash-slash; comment 双斜线,注释符

number sign; pound sign; hash 井号

backslash 反斜线转义符
 
~ tilde 波浪符

full stop; period 句号
 
, comma 逗号
 
colon 冒号
 
; semicolon 分号
 
question mark 问号
 
! exclamation mark 惊叹号
 
' apostrophe 撇号、所有格符号
 
- hyphen 连字号
 
 dash 破折号

_ underscore; understrike 下划线
 
... ellipsis 省略号

‘’ single quotation marks 单引号
 
“” double quotation marks 双引号
 
 Ditto Sign 如上所述
 
 parallel 双线号
 
 swung dash 代字号
 
§  section sign; division 分节号
 
 arrow 箭号;参见号